I responded to Carter O’Brien’s comment on an EveryBlock discussion about a gentrification series on WBEZ, Chicago’s National Public Radio affiliate. I reposted the comment here because I want to talk about the problems of piecemeal zoning and how the city’s TOD ordinance can be improved to generate more and diverse housing types (by types I’m talking about quantity of units and stories, not rent vs. own).

@Carter: I think we might be on the same page about something. You wrote:

The question becomes to what degree should zoning be used to encourage one form of land use over another. That’s the tool in the City’s toolbox, so to speak.

Substantial zoning bonuses which will create brand new high rise towers in a neighborhood of lower-density historic architecture will encourage the settling of one economic class of people and the removal of another. [snip] The evidence is that we see shrinking populations of lower-middle class people raising families by the L stops in Wicker Park, Bucktown, Old Town, Lincoln Park and Lake View.

[Actually, pause now and go read Carter’s full comment – he mentions teardowns as an issue that should be part of a gentrifying neighborhood discussion.]

I’d like to see transit-oriented zoning also used as a tool to also spur smaller, multi-unit buildings (two flats, three flats, four flats, courtyard buildings) by perhaps preventing low-density buildings so close to transit.

Across from Goethe Elementary School a huge parcel of land is being turned into 7 single-family homes on Medill Ave. That’s great land near a good school and 3 blocks from the California Blue Line station.

A “transit overlay district” would be something new to Chicago and could do away with the piecemeal zoning of differing densities, one right next to or mixed in with the other. You might see Bx-1 next to Cx-2 and then a Rx-4. Create concentric zoning circles that keep the density uniformly high nearest the train station and then drop off the further away you get.

This map includes the California Blue Line station and the Goethe school houses (empty area northwest of the RM-5 zone on Medill Avenue). The school is outlined inside PD 349.